Stability of high-beta tokamaks to ballooning modes
Abstract
Fixed-boundary ballooning modes are found to possess a second globally stable regime for high-beta flux-conserving equilibria. This confirms a conjecture of several authors based on local analysis of the instability in the vicinity of the magnetic axis. The range of unstable beta values depends on the details of the equilibrium and, in particular, on shear. Very high shear can decrease the width of the unstable region.
- Publication:
-
Nuclear Fusion
- Pub Date:
- May 1980
- Bibcode:
- 1980NucFu..20..638S
- Keywords:
-
- Beta Factor;
- Magnetohydrodynamic Stability;
- Plasma Equilibrium;
- Tokamak Devices;
- Magnetic Flux;
- Plasma Control;
- Plasma Physics